Annual report [Section 13 and 15(d), not S-K Item 405]

Equity (Detail)

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Equity (Detail)
 3 Months Ended 12 Months Ended
Oct. 29, 2024
shares
Mar. 31, 2023
units
shares
Dec. 31, 2024
$ / shares
shares
Dec. 31, 2023
$ / shares
shares
Mar. 31, 2023
shares
Dec. 31, 2024
$ / shares
shares
Dec. 31, 2023
$ / shares
shares
Class of Stock [Line Items]              
Exchange ratio           1  
Class A Common Stock              
Class of Stock [Line Items]              
Common stock, shares issued (in shares)     10,360,299 10,059,924   10,360,299 10,059,924
Common stock, shares outstanding (in shares)     9,934,449 9,634,074   9,934,449 9,634,074
Common stock shares outstanding unvested portion (in shares)           425,850  
Stocks delivered (in shares)     18,739 47,571      
Class B share retirement (in shares)     141,093 169,238      
Common stock, par value (in dollars per share) | $ / shares     $ 0.0001 $ 0.0001   $ 0.0001 $ 0.0001
Class A LLC Units              
Class of Stock [Line Items]              
Stocks delivered (in shares)     110,949 281,637      
Class B Common Stock              
Class of Stock [Line Items]              
Common stock, shares issued (in shares)     15 15   15 15
Common stock, shares outstanding (in shares)     15 15   15 15
Common stock, par value (in dollars per share) | $ / shares     $ 0.0001 $ 0.0001   $ 0.0001 $ 0.0001
Class B Common Stock | American Advisors Group (AAG)              
Class of Stock [Line Items]              
Shares issued at closing of transaction   1          
Capital Unit, Class A              
Class of Stock [Line Items]              
Common stock, shares issued (in shares)     10,360,299     10,360,299  
Conversion of stock, shares converted (in shares)           205 835,911
Class A LLC Units              
Class of Stock [Line Items]              
Common units outstanding (in shares)     23,826,217     23,826,217  
Class A LLC Units | American Advisors Group (AAG)              
Class of Stock [Line Items]              
Shares issued at closing of transaction   1,969,299          
Contingent equity consideration, number of types | units   2          
Class A LLC Units | Noncontrolling Interest              
Class of Stock [Line Items]              
Common units outstanding (in shares)     13,891,768     13,891,768  
Class A LLC Units | Noncontrolling Interest | American Advisors Group (AAG)              
Class of Stock [Line Items]              
Conversion of stock, shares converted (in shares)         800,000    
Class A LLC Units | Class A Common Stock Shareholders              
Class of Stock [Line Items]              
Common units outstanding (in shares)     9,934,449     9,934,449  
Class A LLC Units, Liability Classified | American Advisors Group (AAG)              
Class of Stock [Line Items]              
Shares issued at closing of transaction 705,841            
Contingent equity consideration (in shares)   705,841          
Class A LLC Units, Equity Classified, Indemnity Holdback | American Advisors Group (AAG)              
Class of Stock [Line Items]              
Contingent equity consideration (in shares)   714,226